Distinguish absent CLI directories from unreadable directory counts and truncated slots while preserving known PE headers and readable CLI data.
Retain environment-entry coverage in the Darwin parser and classify restricted empty, unavailable and ambiguous environments at the native boundary. Keep cleanup fail-closed; code-signing flags do not establish ownership.
Validation: 116 managed source tests, 13 ownership tests, native Swift parser probe and two live Darwin run-token tests; build, static checks and docs checks pass. Restricted-flag cases use parser fixtures; no real restricted capture is claimed. Related to #2035.
4a4d36f881